91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/*
|
|
* Sync File validation framework and debug infomation
|
|
*
|
|
* Copyright (C) 2012 Google, Inc.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef _LINUX_SYNC_H
|
|
#define _LINUX_SYNC_H
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/fence.h>
|
|
|
|
#include <linux/sync_file.h>
|
|
#include <uapi/linux/sync_file.h>
|
|
|
|
/**
|
|
* struct sync_timeline - sync object
|
|
* @kref: reference count on fence.
|
|
* @name: name of the sync_timeline. Useful for debugging
|
|
* @child_list_head: list of children sync_pts for this sync_timeline
|
|
* @child_list_lock: lock protecting @child_list_head and fence.status
|
|
* @active_list_head: list of active (unsignaled/errored) sync_pts
|
|
* @sync_timeline_list: membership in global sync_timeline_list
|
|
*/
|
|
struct sync_timeline {
|
|
struct kref kref;
|
|
char name[32];
|
|
|
|
/* protected by child_list_lock */
|
|
u64 context;
|
|
int value;
|
|
|
|
struct list_head child_list_head;
|
|
spinlock_t child_list_lock;
|
|
|
|
struct list_head active_list_head;
|
|
|
|
struct list_head sync_timeline_list;
|
|
};
|
|
|
|
static inline struct sync_timeline *fence_parent(struct fence *fence)
|
|
{
|
|
return container_of(fence->lock, struct sync_timeline,
|
|
child_list_lock);
|
|
}
|
|
|
|
/**
|
|
* struct sync_pt - sync_pt object
|
|
* @base: base fence object
|
|
* @child_list: sync timeline child's list
|
|
* @active_list: sync timeline active child's list
|
|
*/
|
|
struct sync_pt {
|
|
struct fence base;
|
|
struct list_head child_list;
|
|
struct list_head active_list;
|
|
struct work_struct defer_wq;
|
|
};
|
|
|
|
#ifdef CONFIG_SW_SYNC
|
|
|
|
extern const struct file_operations sw_sync_debugfs_fops;
|
|
|
|
void sync_timeline_debug_add(struct sync_timeline *obj);
|
|
void sync_timeline_debug_remove(struct sync_timeline *obj);
|
|
void sync_file_debug_add(struct sync_file *fence);
|
|
void sync_file_debug_remove(struct sync_file *fence);
|
|
void sync_dump(void);
|
|
|
|
struct sync_timeline *sync_timeline_create(const char *name);
|
|
struct sync_pt *sync_pt_create(struct sync_timeline *obj, int size,
|
|
unsigned int value);
|
|
void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc);
|
|
void sync_timeline_put(struct sync_timeline *obj);
|
|
|
|
#else
|
|
# define sync_timeline_debug_add(obj)
|
|
# define sync_timeline_debug_remove(obj)
|
|
# define sync_file_debug_add(fence)
|
|
# define sync_file_debug_remove(fence)
|
|
# define sync_dump()
|
|
#endif
|
|
|
|
#endif /* _LINUX_SYNC_H */
|